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B2-4 Enzyme· Enzymes are biological catalysts that have many functions inside and outside the cells.· Enzymes are protein molecules made up of long chains of amino acids, these long chains are folded to produce a special shape which enables other molecules to fit into the active site of the enzyme.· The shape of the enzyme is vital as it has a lock and key mechanism and does not catalyse otherwise.· Too high a temperature will change the enzyme shape ­it is called being denatured.…read more

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Enzymes....· Some enzymes work outside the body cells.· A good example is the digestive system.· The digestive enzymes are produced by specialised cells in glands and in the lining of the guts.…read more

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Where are they found?· The enzyme amylase is produced in the salivary glands, pancreas and the small intestine.· Protease enzymes are produced by the stomach, the pancreas and the small intestine. These enzymes catalyse the breakdown of proteins into amino acids.· Lipase enzymes are produced by the pancreas and lipids into fatty acids and glycerol in the small intestine.…read more